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The paper presents the memristive behavior of spin-coated titania thin films. The spin speed during the deposition was varied and their effect on the film thickness and thus, to the memristive behavior was studied. Sample deposited at 5000 rpm produced thinner film thickness which result in better switching behavior. The sample showed larger OFF to ON resistance ratio of 5. All samples were measured...
In this work, TiO2 photoanode have been prepared by mixing the commercial titania powder P-25 with a titanium sol gel. In order to improve the mixing condition the paste was gone through the ultrasonic treatment. After that, the doctor blade technique was used to deposit TiO2 paste on ITO-coated glass substrate. There were two monolayer photoanodes with ultrasonic and without ultrasonic TiO2 pastes...
Titanium dioxide (TiO2) nanopowders of pure and niobium (Nb) doped TiO2 were synthesized using a sol gel immersed heater method. The nanopowders were then used as a filler in poly [2-methoxy-5-(2'-ethylhexyloxy)-p-phneylene] (MEH-PPV) to form hybrid organic-inorganic solar cells. In this study, the influence of TiO2 doped with different concentrations of niobium on the properties of nanohybrid MEH-PPV:...
PMMA/TiO2 nanocomposite films in free standing form were prepared at different amount of TiO2 nanoparticles by using sonication method. The PMMA powder and TiO2 nanopowder were dissolved into the toluene solution and sonicated for 1 h to confirm the homogeneity of the mixture. The FESEM micrographs reveal that PMMA/TiO2 nanocomposite contain 4 wt% TiO2 nanoparticles can produced the homogenous mixture...
Nb-doped TiO2 thin films have been successfully prepared using liquid phase solution method. For the first time, Nb-doped sol-gel has been combined with commercially available TiO2 nanopowder (Degussa P25) for preparing Nb-doped TiO2 photoanode for DSSC application. EDX analysis confirms the presence of Nb in the thin films. Nb-doped TiO2 sample showed improvement in term of electrical resistivity...
The structure transformation of ZnO thin films properties influenced by substrate temperature deposited by RF Magnetron Sputtering is presented. This project has been focused on electrical, optical and structural properties of ZnO thin films. The effect of variation substrate temperature at 200°C∼500°C on the ZnO thin films have been investigated. The thin films were examined using two point probe...
This technical paper investigates the electrical properties of the Zinc doped SnO2 (Zn-doped SnO2) nanostructures that have been prepared by the immersion method by different period of immersion process. The experiment was conducted in 3 different time constraint. The thin films were characterized by using current-voltage (I-V) measurement (Keithley 2400). The results analyzed were for time duration...
Aligned Aluminum (Al)-doped zinc oxide (ZnO) nanorod arrays were prepared on seeded catalyst-coated glass substrates using a novel technique of sonicated sol-gel immersion method at different annealing temperatures. The diameter sizes of synthesized hexagonal-shaped nanorods are found to be in the range between 50 nm to 150 nm. The annealing treatment up to 500 °C did not give any significance effects...
Aligned Aluminum (Al)-doped zinc oxide (ZnO) nanorod arrays were prepared on seeded catalyst-coated glass substrates using a novel technique of sonicated sol-gel immersion method at different annealing temperatures. The diameter sizes of synthesized hexagonal-shaped nanorods are found to be in the range between 50 nm to 150 nm. The annealing treatment up to 500 °C did not give any significance effects...
Titanium Dioxide (TiO2) thin films have been successfully deposited on glass substrate using sol-gel method. The samples were then annealed in a furnace under different oxygen gas flow rate. Current-Voltage (I-V) measurement, SEM, and UV-Vis characterization are done for all samples. SEM images confirm the nanostructured nature of the thin films. The sample with higher oxygen flow rate shows significant...
Hexagonal Al doped ZnO nanorod arrays have been prepared via a simple low-temperature sonicated sol-gel immersion method on Al doped ZnO nanoparticle thin film coated glass substrates. The nanorod arrays were annealed at the temperatures between 300 to 500°C in ambient. The properties of the nanorods have been investigated using field-emission microscope (FESEM), X-ray diffractometer (XRD), photoluminescence...
Spin coating method is used to deposit nanocomposite CNT/MEH-PPV thin film on a glass substrate. The MEH-PPV which is in powder form was weighted and then dissolved into THF. Then, a certain amount of CNTs were added to the MEH-PPV solution. It is then stirred for 3 hours and sonicated for 1 hour to ensure that CNTs is well dispersed in the MEH-PPV solution. The addition of CNTs in the MEH-PPV solution...
ZnO thin films were deposited using thermal chemical vapor deposition (TCVD) using gold as the catalyst in a two furnaces system. Carbothermal technique is employed in this work where graphite was mixed into ZnO powder with 1:1 ratio as the precursor. Different thicknesses of gold were deposited on the substrate to study its effect to the properties of the thin films. The ZnO nanostructures were then...
Titanium Dioxide (TiO2) thin film has been synthesized using sol-gel method and deposited onto glass substrates using spin coating technique. These thin films are then annealed at various temperatures. The electrical and structural characterizations of the as deposited and annealed films were carried out using IV measurement with 4-point probe equipment and scanning electron microscopy (SEM). From...
This study presents result of the optical properties of Zinc Oxide (ZnO) thin film using glass substrate. All the substrate was clean used Acetone, methanol and hydrofluoric acid (HF). Sol-gel method used to prepared Nanostructured ZnO thin film. The precursors used Zinc Acetate, Ethanolamine as a stabilizer and 2-Methoxyethanol as solvents. 10 layers was deposited onto glass substrate by used spin-coating...
Three different type of materials i.e Au, Pt, and Pd have been investigated as metal contact on Titanium Dioxide (TiO2) thin films. These metal contacts have been deposited using sputter coating method. Meanwhile sol-gel spin coating method has been chosen to deposits TiO2 thin film. The ohmic contact characteristic of the three materials has been studied using Current-Voltage measurement.
Titanium dioxide in the anatase phase has been synthesized by the sol-gel method. Then, the solution was deposited onto glass substrate using spin coating technique. These thin films are then annealed at a temperature ranged from 350°C to 550°C. The optical and topology of the thin film was characterized using UV-VIS and AFM. Based on the readings from UV-VIS spectroscopy, it is found that transmittance...
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